Nitrogen dioxideNO2

CAS-No.:
10102-44-0
UN-No.:
1067
EC-No.:
233-272-6
Hazard identification number:
265
Hazard signs
GHS03
GHS04
GHS05
GHS06

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Occupational exposure limit
Workplace exposure limits (UK)
  • STEL (mg/m3) 1.91
  • STEL (ppm) 1
  • TWA (mg/m3) 0.96
  • TWA (ppm) 0.5
  • H: 270
    May cause or intensify fire; oxidizer
  • H: 280
    Contains gas under pressure; may explode if heated
  • H: 314
    Causes severe skin burns
    and eye damage.
  • H: 330
    Fatal if inhaled.

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

  • Melting point:
    -11.2 °C
  • Boiling Point:
    21.1 °C
  • Density (at 20 °C, if not notified otherwise):
    0,003663 (0°C) g/cm3
  • Ionization:
    9.586 ± 0.002 eV
  • Vapour Pressure (at 20 °C, if not notified otherwise):
    960 hPa
  •  

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Also known as:
  • Dinitrogen tetroxide (N2O4)
  • Nitrogen dioxide
  • Nitrogen peroxide
  • nitrous acid

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